Shock absorbing pile driver

Details Shock absorbing pile driver Shock absorbing pile driver

1978-04-10

1981-04-21

Staab, Lawrence J.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

173139, 173162R, B25D 1706, E02D 1310

Patent

active

042627559

ABSTRACT:
A pile driver has a hollow and elongated cylindrical housing. Within the housing, a ram can slide upwardly and downwardly in order to provide the force which can drive a pile into dense strata of the earth. A follower, located partially inside the housing and extending out of the bottom therof, is struck by the ram and is thus interposed between the ram and the pile to be driven when the device is operated. Various devices are disclosed which serve as shock absorbers, the devices cooperating with the follower and with the housing in order to absorb recoil shock which is reflected back to the pile driver after a blow has been transmitted to the pile by the ram via the follower. These devices are so designed that the exterior diameter of the housing does not have to be substantially increased, which allows the pile driver thus manufactured to drive piles through surrounding guides.

REFERENCES:
patent: 886193 (1908-04-01), De Witt
patent: 2558165 (1951-06-01), Anderson
patent: 3417828 (1968-12-01), Duyster et al.
patent: 3797585 (1974-03-01), Ludvigson
patent: 4043405 (1977-08-01), Kuhn

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